A program called FSrecorder
http://www.fs-recorder.net/ there are a couple of samples that come with the down load. but when you make your Offsets remember that FSX uses the XYZ formula, X is left/right left being negative, Y up/down (down negative) and Z being fore/aft (aft negative). You then just have to play with the distances which are in meters. (i.e $Offset: 25 3 -25 hbp = 25m to the left, 3m up and 25m aft). you can also add the time Offset on the next line.
Bruce